.rui-loading-page-content {
  background-color: #263238;
  padding: 30px;
  .rui-grid-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    .rui-grid-item {
      aspect-ratio: 1;
      display: flex;
      align-items: center;
      justify-content: center;
    }
  }
  .linearBorder {
    width: 200px;
    height: 80px;
    background: linear-gradient(0, red 2px, red 2px) no-repeat left top/0 2px,
      linear-gradient(-90deg, red 2px, red 2px) no-repeat right top/2px 0,
      linear-gradient(-180deg, red 2px, red 2px) no-repeat right bottom/0 2px,
      linear-gradient(-270deg, red 2px, red 2px) no-repeat left bottom/2px 0;
    cursor: pointer;
    line-height: 80px;
    text-align: center;
    font-weight: bold;
    font-size: 50px;
    color: red;
    transition: all 300ms;
  }

  .linearBorder:hover {
    background-size: 100% 2px, 2px 100%, 100% 2px, 2px 100%;
  }
}
